We aren’t sure what the hold-up was, but Google finally posted the November Android security patch for the original Pixel and Pixel XL today.
The builds arrive as PPR1.181005.003.A1 (Telus only) and PPR2.181005.003.A1 (all others).
You can grab each image or OTA file at the links below. For instructions on how to flash a factory image, here you go. For instructions on how to flash an OTA .zip file, here you go. To check for the update, head into Settings>System>Advanced>System update.